Metamath Proof Explorer |
< Previous
Next >
Nearby theorems |
||
Mirrors > Home > MPE Home > Th. List > eulerth | Structured version Visualization version GIF version |
Description: Euler's theorem, a generalization of Fermat's little theorem. If 𝐴 and 𝑁 are coprime, then 𝐴↑ϕ(𝑁)≡1 (mod 𝑁). This is Metamath 100 proof #10. Also called Euler-Fermat theorem, see theorem 5.17 in [ApostolNT] p. 113. (Contributed by Mario Carneiro, 28-Feb-2014.) |
Ref | Expression |
---|---|
eulerth | ⊢ ((𝑁 ∈ ℕ ∧ 𝐴 ∈ ℤ ∧ (𝐴 gcd 𝑁) = 1) → ((𝐴↑(ϕ‘𝑁)) mod 𝑁) = (1 mod 𝑁)) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | phicl 16398 | . . . . . . . 8 ⊢ (𝑁 ∈ ℕ → (ϕ‘𝑁) ∈ ℕ) | |
2 | 1 | nnnn0d 12223 | . . . . . . 7 ⊢ (𝑁 ∈ ℕ → (ϕ‘𝑁) ∈ ℕ0) |
3 | hashfz1 13988 | . . . . . . 7 ⊢ ((ϕ‘𝑁) ∈ ℕ0 → (♯‘(1...(ϕ‘𝑁))) = (ϕ‘𝑁)) | |
4 | 2, 3 | syl 17 | . . . . . 6 ⊢ (𝑁 ∈ ℕ → (♯‘(1...(ϕ‘𝑁))) = (ϕ‘𝑁)) |
5 | dfphi2 16403 | . . . . . 6 ⊢ (𝑁 ∈ ℕ → (ϕ‘𝑁) = (♯‘{𝑘 ∈ (0..^𝑁) ∣ (𝑘 gcd 𝑁) = 1})) | |
6 | 4, 5 | eqtrd 2778 | . . . . 5 ⊢ (𝑁 ∈ ℕ → (♯‘(1...(ϕ‘𝑁))) = (♯‘{𝑘 ∈ (0..^𝑁) ∣ (𝑘 gcd 𝑁) = 1})) |
7 | 6 | 3ad2ant1 1131 | . . . 4 ⊢ ((𝑁 ∈ ℕ ∧ 𝐴 ∈ ℤ ∧ (𝐴 gcd 𝑁) = 1) → (♯‘(1...(ϕ‘𝑁))) = (♯‘{𝑘 ∈ (0..^𝑁) ∣ (𝑘 gcd 𝑁) = 1})) |
8 | fzfi 13620 | . . . . 5 ⊢ (1...(ϕ‘𝑁)) ∈ Fin | |
9 | fzofi 13622 | . . . . . 6 ⊢ (0..^𝑁) ∈ Fin | |
10 | ssrab2 4009 | . . . . . 6 ⊢ {𝑘 ∈ (0..^𝑁) ∣ (𝑘 gcd 𝑁) = 1} ⊆ (0..^𝑁) | |
11 | ssfi 8918 | . . . . . 6 ⊢ (((0..^𝑁) ∈ Fin ∧ {𝑘 ∈ (0..^𝑁) ∣ (𝑘 gcd 𝑁) = 1} ⊆ (0..^𝑁)) → {𝑘 ∈ (0..^𝑁) ∣ (𝑘 gcd 𝑁) = 1} ∈ Fin) | |
12 | 9, 10, 11 | mp2an 688 | . . . . 5 ⊢ {𝑘 ∈ (0..^𝑁) ∣ (𝑘 gcd 𝑁) = 1} ∈ Fin |
13 | hashen 13989 | . . . . 5 ⊢ (((1...(ϕ‘𝑁)) ∈ Fin ∧ {𝑘 ∈ (0..^𝑁) ∣ (𝑘 gcd 𝑁) = 1} ∈ Fin) → ((♯‘(1...(ϕ‘𝑁))) = (♯‘{𝑘 ∈ (0..^𝑁) ∣ (𝑘 gcd 𝑁) = 1}) ↔ (1...(ϕ‘𝑁)) ≈ {𝑘 ∈ (0..^𝑁) ∣ (𝑘 gcd 𝑁) = 1})) | |
14 | 8, 12, 13 | mp2an 688 | . . . 4 ⊢ ((♯‘(1...(ϕ‘𝑁))) = (♯‘{𝑘 ∈ (0..^𝑁) ∣ (𝑘 gcd 𝑁) = 1}) ↔ (1...(ϕ‘𝑁)) ≈ {𝑘 ∈ (0..^𝑁) ∣ (𝑘 gcd 𝑁) = 1}) |
15 | 7, 14 | sylib 217 | . . 3 ⊢ ((𝑁 ∈ ℕ ∧ 𝐴 ∈ ℤ ∧ (𝐴 gcd 𝑁) = 1) → (1...(ϕ‘𝑁)) ≈ {𝑘 ∈ (0..^𝑁) ∣ (𝑘 gcd 𝑁) = 1}) |
16 | bren 8701 | . . 3 ⊢ ((1...(ϕ‘𝑁)) ≈ {𝑘 ∈ (0..^𝑁) ∣ (𝑘 gcd 𝑁) = 1} ↔ ∃𝑓 𝑓:(1...(ϕ‘𝑁))–1-1-onto→{𝑘 ∈ (0..^𝑁) ∣ (𝑘 gcd 𝑁) = 1}) | |
17 | 15, 16 | sylib 217 | . 2 ⊢ ((𝑁 ∈ ℕ ∧ 𝐴 ∈ ℤ ∧ (𝐴 gcd 𝑁) = 1) → ∃𝑓 𝑓:(1...(ϕ‘𝑁))–1-1-onto→{𝑘 ∈ (0..^𝑁) ∣ (𝑘 gcd 𝑁) = 1}) |
18 | simpl 482 | . . 3 ⊢ (((𝑁 ∈ ℕ ∧ 𝐴 ∈ ℤ ∧ (𝐴 gcd 𝑁) = 1) ∧ 𝑓:(1...(ϕ‘𝑁))–1-1-onto→{𝑘 ∈ (0..^𝑁) ∣ (𝑘 gcd 𝑁) = 1}) → (𝑁 ∈ ℕ ∧ 𝐴 ∈ ℤ ∧ (𝐴 gcd 𝑁) = 1)) | |
19 | oveq1 7262 | . . . . 5 ⊢ (𝑘 = 𝑦 → (𝑘 gcd 𝑁) = (𝑦 gcd 𝑁)) | |
20 | 19 | eqeq1d 2740 | . . . 4 ⊢ (𝑘 = 𝑦 → ((𝑘 gcd 𝑁) = 1 ↔ (𝑦 gcd 𝑁) = 1)) |
21 | 20 | cbvrabv 3416 | . . 3 ⊢ {𝑘 ∈ (0..^𝑁) ∣ (𝑘 gcd 𝑁) = 1} = {𝑦 ∈ (0..^𝑁) ∣ (𝑦 gcd 𝑁) = 1} |
22 | eqid 2738 | . . 3 ⊢ (1...(ϕ‘𝑁)) = (1...(ϕ‘𝑁)) | |
23 | simpr 484 | . . 3 ⊢ (((𝑁 ∈ ℕ ∧ 𝐴 ∈ ℤ ∧ (𝐴 gcd 𝑁) = 1) ∧ 𝑓:(1...(ϕ‘𝑁))–1-1-onto→{𝑘 ∈ (0..^𝑁) ∣ (𝑘 gcd 𝑁) = 1}) → 𝑓:(1...(ϕ‘𝑁))–1-1-onto→{𝑘 ∈ (0..^𝑁) ∣ (𝑘 gcd 𝑁) = 1}) | |
24 | fveq2 6756 | . . . . . 6 ⊢ (𝑘 = 𝑥 → (𝑓‘𝑘) = (𝑓‘𝑥)) | |
25 | 24 | oveq2d 7271 | . . . . 5 ⊢ (𝑘 = 𝑥 → (𝐴 · (𝑓‘𝑘)) = (𝐴 · (𝑓‘𝑥))) |
26 | 25 | oveq1d 7270 | . . . 4 ⊢ (𝑘 = 𝑥 → ((𝐴 · (𝑓‘𝑘)) mod 𝑁) = ((𝐴 · (𝑓‘𝑥)) mod 𝑁)) |
27 | 26 | cbvmptv 5183 | . . 3 ⊢ (𝑘 ∈ (1...(ϕ‘𝑁)) ↦ ((𝐴 · (𝑓‘𝑘)) mod 𝑁)) = (𝑥 ∈ (1...(ϕ‘𝑁)) ↦ ((𝐴 · (𝑓‘𝑥)) mod 𝑁)) |
28 | 18, 21, 22, 23, 27 | eulerthlem2 16411 | . 2 ⊢ (((𝑁 ∈ ℕ ∧ 𝐴 ∈ ℤ ∧ (𝐴 gcd 𝑁) = 1) ∧ 𝑓:(1...(ϕ‘𝑁))–1-1-onto→{𝑘 ∈ (0..^𝑁) ∣ (𝑘 gcd 𝑁) = 1}) → ((𝐴↑(ϕ‘𝑁)) mod 𝑁) = (1 mod 𝑁)) |
29 | 17, 28 | exlimddv 1939 | 1 ⊢ ((𝑁 ∈ ℕ ∧ 𝐴 ∈ ℤ ∧ (𝐴 gcd 𝑁) = 1) → ((𝐴↑(ϕ‘𝑁)) mod 𝑁) = (1 mod 𝑁)) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ↔ wb 205 ∧ wa 395 ∧ w3a 1085 = wceq 1539 ∃wex 1783 ∈ wcel 2108 {crab 3067 ⊆ wss 3883 class class class wbr 5070 ↦ cmpt 5153 –1-1-onto→wf1o 6417 ‘cfv 6418 (class class class)co 7255 ≈ cen 8688 Fincfn 8691 0cc0 10802 1c1 10803 · cmul 10807 ℕcn 11903 ℕ0cn0 12163 ℤcz 12249 ...cfz 13168 ..^cfzo 13311 mod cmo 13517 ↑cexp 13710 ♯chash 13972 gcd cgcd 16129 ϕcphi 16393 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1799 ax-4 1813 ax-5 1914 ax-6 1972 ax-7 2012 ax-8 2110 ax-9 2118 ax-10 2139 ax-11 2156 ax-12 2173 ax-ext 2709 ax-rep 5205 ax-sep 5218 ax-nul 5225 ax-pow 5283 ax-pr 5347 ax-un 7566 ax-cnex 10858 ax-resscn 10859 ax-1cn 10860 ax-icn 10861 ax-addcl 10862 ax-addrcl 10863 ax-mulcl 10864 ax-mulrcl 10865 ax-mulcom 10866 ax-addass 10867 ax-mulass 10868 ax-distr 10869 ax-i2m1 10870 ax-1ne0 10871 ax-1rid 10872 ax-rnegex 10873 ax-rrecex 10874 ax-cnre 10875 ax-pre-lttri 10876 ax-pre-lttrn 10877 ax-pre-ltadd 10878 ax-pre-mulgt0 10879 ax-pre-sup 10880 |
This theorem depends on definitions: df-bi 206 df-an 396 df-or 844 df-3or 1086 df-3an 1087 df-tru 1542 df-fal 1552 df-ex 1784 df-nf 1788 df-sb 2069 df-mo 2540 df-eu 2569 df-clab 2716 df-cleq 2730 df-clel 2817 df-nfc 2888 df-ne 2943 df-nel 3049 df-ral 3068 df-rex 3069 df-reu 3070 df-rmo 3071 df-rab 3072 df-v 3424 df-sbc 3712 df-csb 3829 df-dif 3886 df-un 3888 df-in 3890 df-ss 3900 df-pss 3902 df-nul 4254 df-if 4457 df-pw 4532 df-sn 4559 df-pr 4561 df-tp 4563 df-op 4565 df-uni 4837 df-int 4877 df-iun 4923 df-br 5071 df-opab 5133 df-mpt 5154 df-tr 5188 df-id 5480 df-eprel 5486 df-po 5494 df-so 5495 df-fr 5535 df-we 5537 df-xp 5586 df-rel 5587 df-cnv 5588 df-co 5589 df-dm 5590 df-rn 5591 df-res 5592 df-ima 5593 df-pred 6191 df-ord 6254 df-on 6255 df-lim 6256 df-suc 6257 df-iota 6376 df-fun 6420 df-fn 6421 df-f 6422 df-f1 6423 df-fo 6424 df-f1o 6425 df-fv 6426 df-riota 7212 df-ov 7258 df-oprab 7259 df-mpo 7260 df-om 7688 df-1st 7804 df-2nd 7805 df-frecs 8068 df-wrecs 8099 df-recs 8173 df-rdg 8212 df-1o 8267 df-oadd 8271 df-er 8456 df-map 8575 df-en 8692 df-dom 8693 df-sdom 8694 df-fin 8695 df-sup 9131 df-inf 9132 df-card 9628 df-pnf 10942 df-mnf 10943 df-xr 10944 df-ltxr 10945 df-le 10946 df-sub 11137 df-neg 11138 df-div 11563 df-nn 11904 df-2 11966 df-3 11967 df-n0 12164 df-xnn0 12236 df-z 12250 df-uz 12512 df-rp 12660 df-fz 13169 df-fzo 13312 df-fl 13440 df-mod 13518 df-seq 13650 df-exp 13711 df-hash 13973 df-cj 14738 df-re 14739 df-im 14740 df-sqrt 14874 df-abs 14875 df-dvds 15892 df-gcd 16130 df-phi 16395 |
This theorem is referenced by: fermltl 16413 prmdiv 16414 odzcllem 16421 odzphi 16425 vfermltl 16430 lgslem1 26350 lgsqrlem2 26400 |
Copyright terms: Public domain | W3C validator |